Figure 4

Distance assessments between consomic strains and founder strains. A) Scatterplot of the first two PCs of a principal components analysis including strain mean shapes of PWD (large square), C57BL/6J (large dot) and the consomic strains (small dots). B) Pairwise Procrustes distances between PWD, C57BL/6J and the CS. C) Scatterplot of the first two PCs of a principal components analysis including PWD (squares), C57BL/6J (dots) and an artificial "strain" (diamonds) created by adding the sum over all C57BL/6J-CS strain mean Procrustes coordinates-differences to the C57BL/6J individual shapes. This "B6 + sum of consomic effects" population represents the hypothetical phenotypes which would occur if the individual effects of all chromosomes acted together in a purely additive fashion. Numbers on arrows indicate Procrustes distances between the strains. D) as before, but including the wild mouse populations from [14] (circles), indicating the range of natural variation of house mouse mandible shape (see text).